un. 悬挂式焊条夹持器

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发表于:2018-12-01 / 阅读(95) / 评论(0) 分类 用Mp3背六级单词

This is Scientific American's sixty seconds science, I'm Christopher Intagliata. Got a minute? Instead of installing solar paint on your roof how about just giving a house new paint job of cause you'd have to sure to use solar paint. That's what to a

发表于:2018-12-02 / 阅读(89) / 评论(0) 分类 Scientific American(十二)月

Lesson 17: The longest suspension bridge in the world 世界上最长的吊桥 Listen to the tape then answer the question below. 听录音,然后回答以下问题。 How is the bridge supported? Verrazano, an Italian about whom little is known, sa

发表于:2018-12-08 / 阅读(723) / 评论(0) 分类 新概念英语第三册

Bacteria Discovered To Recharge Cell Phone A microbe called Rhodoferax Ferrireducens,found in the mud at Oyster Bay,Virginia,has been discovered to transfer electrons directly onto an electrode

发表于:2018-12-18 / 阅读(63) / 评论(0) 分类 有声杂志阅读

Time for M.I.T.s Clean Energy Prize. The annual competition gives teams of university students a chance to compete for $200,000 to kick-start their new clean energy business. One finalist designed a compression technology for natural gas wells that w

发表于:2019-01-02 / 阅读(265) / 评论(0) 分类 60秒科学

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Solar panels typically convert sunlight into electricity or heat. But photosynthetic vegetation converts sunlight into chemical energy. Now M.I.T.s Dan

发表于:2019-01-04 / 阅读(72) / 评论(0) 分类 Scientific American(八)月
学英语单词
aerial balance
ammonium sulfate
assay curve
athrodesis
automatic pilot channel
Barkeria
beach head dump
boundary-layer control
break of machinery
bubonic plague
ceraunoscope
chloroprene gum
climatic forecast
cloisonn
cloud base detrainment instability
concentric conics
cone type loudspeaker
continuous magnification lens
continuous-speeches
core volume
Craigenputtock
delayed access
djordje
dogsleds
double roving
doung
economic body
economic psychology
egress pressure
eighty-four
electrician's putty
electrolysis unit
erect stem
European law
evolutionary-genetics
fank
figurine
flag word
fork pin
Gilded Age
gradation test card
grammaticalization
grass ski
guide block bearing
high - density polyethylene
hissy fits
hosiery boarding machine
I-direction
indicated glass column
interpeduncular
jonathan wainwright
Katagum, R.
keeled over
Lammasch, Heinrich
Langhans' stria
left-eyes
liquid rubber
log cabin myth
log tally
magnetostatic
Mormon State
musical presentation statement
New Caledonia Basin
non-conforming finite element
nonfinalists
obstructionisms
oleochemistry
packer setting travel
panfil
parameter detection
payolas
permissive action
pilotless target aircraft squadron
plague of locust
qualify
random unbiased sample
re-offends
regruntle
retarded deformation
Sanio's law
secondary cyclone
shag-rag
sheerline
shell-suit
spatial query
spikemoss
STFs
strengthened hold
strong meat
subject card
takyr soil
telescope nose
temporary pasture
territorial claim
testingpurposes
Torrence, Frederic Ridgely
transition moment
transition of the first order
tussis quinta
vestigated
vestigital-sideband transmission
Yongnim-dong